KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Tel: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating instruction Pallet truck scale KERN VHB/VHS Version 1.
GB KERN VHB/VHS Version 1.2 11/2010 Operating instruction Pallet truck scale Table of Contents 1 TECHNICAL DATA............................................................................................. 3 2 DECLARATION OF CONFORMITY ................................................................... 4 3 BASIC INSTRUCTIONS FOR SCALES ............................................................. 5 3.1 Proper use........................................................................................
1 Technical data KERN VHB 2T1 VHB 2T1 1 kg 1 kg 2000 kg 2000 kg 1 kg 1 kg Linearity ± 2 kg ± 2 kg Stabilization time 3 sec. 3 sec. Allowable ambient temperature -10° C .... + 40° C -10° C .... + 40° C Humidity of air max. 95 % (not condensing) max. 95 % (not condensing) Weighing Units kg, lb kg, lb Electric Supply 4 x 1.5V AA batteries 4 x 1.5V AA batteries Readability (d) Weighing range (max) Reproducibility 35 h/approx.
2 Declaration of conformity KERN & Sohn GmbH D-72322 Balingen-Frommern Postbox 4052 email: info@kern-sohn.de Phone: 0049-[0]7433- 9933-0 Fax: 0049-[0]7433-9933-149 Internet: www.kern-sohn.
3 Basic instructions for scales 3.1 Proper use The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic“ balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. As soon as a stable weighing value is reached the weighing value can be read. 3.2 Improper Use Do not use balance for dynamic weighings.
3.4 Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this.
6 Unpacking, Setup and Commissioning 6.1 Site of installation, place of operation for scales The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance. Therefore, observe the following for the installation site: The load must be lifted clear of the display unit’s case and other pallets.
6.2 Scope of delivery Standard accessory: 6.3 • Pallet truck scale • 4 x 1.5V AA batteries • Operating Manual • Paper roll (KERN VHS) Battery operation Cover battery compartment To change the batteries, unscrew and take off the cover of the battery compartment at the back of the display unit. Replace the used batteries with new ones (4 x 1.5V AA batteries) (Pay attention to correct polarity) and reinsert the battery cover.
6.5 Overview of display Example: KERN VHB THE DISPLAY The three displays provide the following information: ◄ The weighing system (incl. load) is stable ▬ The indicated weight has a negative value NET ◄ The indicated value is a net weight DISPLAY- MESSAGES The following messages may appear on the display: HELP 1 Weighing system overloaded HELP 2 Taring impossible due to negative gross weight HELP 3 Negative signal of load cells to A-D converter / slant HELP 4 Entered tare weight is too high.
6.6 Keyboard overview Each key provides an operating as well as an input function. Operating function Confirm and enter numeric values. Shifts the flashing digits to the left TARE Zero setting and automatic tare PRETARE Input of tare Entering numeric values: Decreases the numeric value of flashing digit by 1. TOTAL Adding Entering numeric values: Increases the numeric value of flashing digit by 1. Adding Entering numeric values: Increases the numeric value of flashing digit by 1.
7 Functions of display unit 7.1 Prior to weighing: ZERO-POINT CHECK Prior to each weighing process ensure that the system is unloaded and clear of obstructions. The display unit provides automatic zero adjustment. This means, that small deviations from the zero-point are corrected automatically. If the display unit does not correct the zero-point automatically you will have to carry out a manual correction with the help of the TARE key. 7.
PRETARE ¾ Press button ¾ Press the numeric the desired value. ¾ To move to the next segment, press the key Repeat this action until the display shows the desired tare value. TOTAL up or down PRETARE key until the flashing number has reached TARE ¾ TARE ¾ To activate the tare weight (but not for storing): Press the key for three seconds, to confirm the value. The tare weight is now activated. “NET” appears.
7.5 Addition of individual weighings The display unit offers an option that allows the addition of weighings and the display of the total weight. When the tare weight is active, the net weight is automatically added up. ¾ Loading the system with the load to be added ¾ To add the weighed weight to the memory, press the key. The displayed value is stored and simultaneously added to the summation memory.
7.6 PRINT OUT (KERN VHS) 1 2 3 1. Stop printing process 2. Paper feed, only when LED display on 3. LED, illuminated during printing If the weighing system has been equipped with a printer, actual weighing data can be printed out. ¾ Press the 14 key. A print is made. The weight is at the same time stored and added in the memory (see 7.5).
In the printout a gross weight is indicated with the letters “B/G” and a net weight with the letter “N”. A keyed in tare weight will also be printed and is indicated with the letters “PT”. The total weight is shown with the letters “TOT”. Example printout: 7.7 01 02 03 04 04 04 B/G 6.8 B/G 158.2 N 426.5 N 1200.0 PT 150.0 TOT 1791.5 kg kg kg kg kg kg PAPER CHANGE (KERN VHS) Thermal roll Roll diameter max. 32 mm Wide 58 mm ¾ ¾ ¾ ¾ ¾ Turn off the weighing system.
8 Service, maintenance, disposal 8.1 Cleaning Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft cloth. 8.2 Service, maintenance The appliance may only be opened by trained service technicians who are authorized by KERN. The same maintenance guidelines apply to the chassis of the mobile weighing system as those for simple manual pallet trucks.
9 Instant help In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault Possible cause The displayed weight does not glow. • The balance is not switched on. • The batteries are empty The displayed weight is permanently • changing Draught/air movement • Sites with vibration. • The weighing plate is in contact with foreign matter.
